Firmness
Type
Pocket Spring
Depth (cm)
Number of Layers
Trial Period (nights)
Warranty (years)
Price Range
£494 to £830
Best Sleeping Position(s)
Certifications
Assessed from Silentnight's product page, captured September 2026, and from regular price comparison across our UK retail partners.
Choice here comes down to brand reassurance and convenience. Silentnight is a long established British manufacturer, and the boxed format makes getting the mattress into your home far simpler than wrestling a flat one up the stairs. It's available in four sizes, UK Single, Double, King and Super King, so most bed frames are covered. The price range of £494 to £830 sits in mid-market territory, though we can't yet weigh that against a detailed spec. Buying without full construction details is a leap, so treat this as a starting point rather than a settled verdict.
Key Features & what's inside
Awaiting up to date specifications. Please check back later.
Who's it NOT for?
If you want to compare spring counts, foam types or depth before spending this kind of money, this listing won't give you enough to go on yet. Cautious buyers who need firmness detail, or a stated trial and guarantee, should hold off until the full specification is confirmed.
Silentnight Just Sleep Calm Mirapocket 1000 Mattress in a Box
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How much does the Silentnight Just Sleep Calm Mirapocket 1000 cost?
Prices run from £494.42 up to £830 depending on the size you choose. It's currently listed through one retailer, so it's worth checking the live price before you buy.
What sizes does the Calm Mirapocket 1000 come in?
It's available in four UK sizes: Single, Double, King and Super King. That covers most standard British bed frames, though always measure your frame before ordering.
Is the Silentnight Calm Mirapocket 1000 a mattress in a box?
Yes. It arrives rolled and vacuum-packed in a box, which means it's much easier to manoeuvre through hallways and up stairs than a traditional flat-delivered mattress. It expands once unpacked.
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